Speaker



FIG. 1 is a front perspective view of a speaker according to my new design;

FIG. 2 is a front view of the design of FIG. 1;

FIG. 3 is a rear view of the design of FIG. 1;

FIG. 4 is a right side view of the design of FIG. 1, the left-side view being a mirror image thereof;

FIG. 5 is a top view of the design of FIG. 1; and,

FIG. 6 is a bottom view of the design of FIG. 1.

The dash-dash broken lines illustrate environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 